C64 Studio is a .NET based IDE written by Georg Rottensteiner. This app supports project based C64 assembly.

The internal assembler is using the ACME syntax. In connection with Vice the IDE allows you to debug through your code and watch variables/memory locations, registers and memory.

Any other emulator can be set up as well if it’s startable via runtime arguments. C64 Studio allows you to compile to raw binary, .prg, .t64 or cartridge format (.bin and .crt for 8k and 16k). Additionally to this C64 Studio comes with a charset and sprite editor.

Version history (19.02.2012 – 2.1):

• Fixed drop bug (.c64 file would not open project).
• Fixed run bug if basic project was run after asm project.
• Synced toolbar new menu with menu new.
• Fixed bug in !bin macro (!bin <filename>,1000,0 would raise an error even when the file was big enough).
• Added syntax coloring for opcodes (ror, rol, bvc, bvs, brk, php, plp, clv, cld).
• Fixed bug in Basic parser, now to/from label mode works again for goto.

Download: C64 Studio v2.1 (901)

source: lemon64.com